*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}


body{
    font-family: sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

.container{
    display: flex;
    width: 90vw;
}
.panel{
    background-size: cover;
    background-position:center;
    background-repeat: no-repeat;
    height: 80vh;
    border-radius: 50px;
    color: white;
    cursor: pointer;
    flex:1;
    margin: 10px;
    position: relative;
    transition: all 700ms ease-in 0s;
}
.panel h3{
    font-size: 24px;
    position: absolute;
    bottom: 20px;
    left: 20px;
    opacity: 0;
}
.panel.active{
    flex:8;
}

.panel.active h3{
    opacity: 1;
    transition: opacticy 0.3s ease-in 0.4s;
}

@media (max-width:480px) {
    .container{
        width: 100vw;
    }
    .panel:nth-of-type(4),.panel:nth-of-type(5){
        display: none;
    }
}